Cat Relpacement Pipe

[drf]

Has anyone fitted a Cat replacement pipe and did you notice the difference. My car has a sports exhaust but it still doesn’t sound loud. I'm thinking of buying the Lotus version and hence to keep warrantee valid.

[drf]

Thanks all Pipe is now on order and so is a K&N induction kit. Any ideas on how much power I should now have. A guess 125bhp ?

[drf]

Have you changed the ECU then. If so how much (cost & power) and who did you get it from. Who's rolling road did you use and was it worth it? Thanks Duncan